$(document).ready(function() {
    $('.submitComment').submit(function() {
        $.ajax({
            url: site_url + '/website/article/add_comment',
            data: $('form').serialize(),
            type: 'POST',
            success: function(comment) {
                if ($(comment).text() == "")
                {
                    $('#attention').show();
                }
                else
                {
                    $('#attention').hide();
                    $('#suggest_comment').hide();
                    $(comment).hide().insertAfter('#insertAfterMe').slideDown('slow');
                    $('#comment_noidung').val("");
                }
            }
        });
        return false;
    });
});